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Code Issues Activity

get rid of lpf as it barely works, swh-plugin's lowpass_iir_1891 works better

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KubaPro010
2025-03-09 09:35:10 +01:00
parent 2c18edc6a8
commit 0a99e3364c
4 changed files with 3 additions and 46 deletions
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9
lib/filters.h
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@@ -14,15 +14,6 @@ typedef struct
void init_preemphasis(ResistorCapacitor *filter, float tau, float sample_rate);
float apply_preemphasis(ResistorCapacitor *filter, float sample);
typedef struct {
// https://www.earlevel.com/main/2012/11/26/biquad-c-source-code/
float a0, a1, a2;
float b1, b2;
float z1, z2;
} BiquadFilter;
void init_lpf(BiquadFilter* filter, float cutoffFreq, float qFactor, float sampleRate);
float apply_biquad(BiquadFilter* filter, float input);
float hard_clip(float sample, float threshold);
float voltage_db_to_voltage(float db);
float power_db_to_voltage(float db);